| 摘要 |
A CLV (Constant Linear Velocity) optical disc which can record the information with a constant linear velocity, wherein plural lines of specified tracks exist in a predetermined data area, a railroad length of the specified tracks is integer multiple of the length of a sector, the length of the sector on the specified tracks is 2xpixN times a track pitch, the number N being a positive integral number, and head positions of the specified tracks are lined up on a predetermined radius line A-A' at equal track intervals. The tracks including a head sector on the predetermined data area are the specified tracks. In such structure, calculation of the conversion between the information number and the number of the tracks can be simple, the unevenness of the disc format manufactured by use of different optical disc master board (plate) can be eliminated, and high-speed accessing operations can be performed.
|
